I had to install phalcon myself after easyapache failled to install it using the above script linked to by @xerron. It did created a blank entry in the exhaustive list of php modules to add which you could see in the CLI easyapache. It still failed to install. Cpanel commented that they had this issue buried in the backlog.

I now need to remember to rebuild phalcon everytime php rebuilds with easyapache.